Note 5 - Goodwill and Other Intangible Assets, Net (Details Textual) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023	Dec. 31, 2022
Goodwill, Impairment Loss	$ 0	$ 0
Goodwill, Period Increase (Decrease)	1,300,000		$ 200,000
Goodwill	17,784,036		$ 16,453,049	$ 16,231,938
Amortization of Intangible Assets	350,336	$ 315,303
Minimum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)			1 year
Maximum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)			15 years
Industrial and Transportation Products Segment [Member]
Goodwill, Period Increase (Decrease)	$ 1,300,000